... impact resistance 3.low shrinkage modified nylon granules plus 45% fiberglass Advantages:1. the heat resistance has been improved as ... , meanwhile its rigidity increased.3.with the addition of fiberglass,the nylon's stress cracking will disappear,and its impact ... compressive strength,flexural strength,etc.5.with the addition of fiberglass and other auxiliaries,the flammability of nylon declines a lot ...